How to set the resolution of Rock 5b board to 2560*1600

Hi,

I’m using a display with the resolution 2560x1600 for Rock 5B android OS. I’m not able to see the android screen. If I use monitor then I’m able to use android OS properly. Anyone knows how to set the resolution of the board or it is related to any other issue?

I tried by changing resolution in settings -> HDMI -> Resolution, Also I tried by giving command “adb shell wm size”, which are not helping me.

Can anyone please help me?